Simple Machines

Here is a list of them - Pulley, Wheel and Axle, Wedge, Screw, Incline Plane, and Lever. A complex machine is a machine made up of more than one machine. An example would be a car it is a wheel an axel, and a lever and many more.

MA - Mechanical Advantage

Mechanical advantage is how much easier a job will be if you used a simple or complex machine when doing work. Output force is what you get out of it, and input force is what you physically put in.

St. Patricks day

No I don't believe in Leprechauns. Also the more input force the more output force and so on. The shorter wedge takes more force than the longer wedge.

Wedges, lever, and Incline Plane

I learned that the placement of the fulcrum is vital. It is a lot easier if it is closer to you. It decides whether or not the relationship is Direct or Inverse. Direct is when one goes up the other goes up, and inverse means when one goes up the other goes down. I discovered incline planes are used as ramps, and an incline plane would be easier to use if it was long, and some factors that could effect it would be the weather.

Wheel & Axel

I learned that a wheel and axel makes work alot becuase i tmakes it easier to lift an object. A screw can also make it much easier to lift objects. The mechanical advantage depends on how big the wheel is and how big the threads are. The wider the thread the more force it takes to lift the object. The high the MA the more effective the machine. So it is more efficient with higher MA.

Wheel and Screw!

The radius of the wheel and also the diameter of the screw affect how much work is needed to complete the job. When the radius of the wheel is bigger the force needed to lift something is less but when the radius of the wheel is smaller the force needed increases that is very similiar with the screw. The mechanical andvantage is the biggest when the screw and wheel are very big.

KE & GPE

Gravitational Potentional Energy is taking Joules divided by gravity times height. to find mass. The KE is KE = 1/2mv^2. No I did not get to go. I was going to but after school I usually lift weights till 6, and when I was done I forgot. Sorry.

Energy

Gravitational Potentional Energy is taking Joules divided by gravity times meters, to find mass. the KE has 2. One is 2KE divided by mass take the square root of the anwser, that is how you find volcity. Most of the affects come from both of them. No I did not get to go. I was going to but then I was in newell till 5ish, had homework and by the time I got my homework done it was time for the chemstry show.

Energy

I guess it has been couple days since we have blogged so..... Yesterday we took notes over gravitational potential energy and kinetic energy. Please describe GPE and KE. What factors affect potential energy and what factors affect kinetic energy? Did any of you go to the chemistry show last night? What did you think?

;Wheel and Axle!

On Thursday, we learned how wedges and levers work. The distance of the threads, and how big or small the wheel is, will determine the MA. If the threads are further apart it can lift more and then it would be a higher MA. The best is far-apart threads and a big wheel.

wheel and axel

the radius of the wheel and the diameter of the screw affect how much work is needed to be done, when the radius of the wheel is increased the force needed to lift the gate is less but when the radius of the wheel is decreased the force needed increases that is the same with the screw. the mechanical andvantage is the best when the screw and wheel is at its largest.

St. Patricks day

I don't believe in lepricons or the gold at the end of the rainbow, I also dont' think they usesimple machines or wedges. The input force effected the output force because if you use more input force you will have a greater output force, and same with the input distance and output distance. The shorter wedge was harder to use because i takes alot more force becuase it is not as sharp as the longer one. With the lever I noticed that the closer you were to the fulcrum it was easier, and harder if it was farther away.

Wheel and axel

I have learned that a wheel and axel make work much easier and a screw can also make it much easier to lift objects. The mechanical advantage depends on how big the wheel is and how big the threads are. The wider the thread the more force it takes to lift the object. I also learned the most effective machines have the lease MA.

i cant believe it because the mouth seems like it had just started no lie it's so crazy!!!!!!!!!!!!!! i have learn that 2 things that effected the wheel and axlewas the wheel radius, and how the length of a the threads. and the greanter the number of the threads the and the greater the wheel the less force it needed to turn it

Well Ive learned that you can combine the wheel and axle with a screw to make it a lot easier to lift an object. The MA all depends on the size of the wheel and how far apart the threads are on the screw. The farther apart the threads on the screw make the MA greater. If the machine is effective though it will have a very low MA.

The Wheel and Axle!!!!

In this activity we learned how the wheel and axle helps you lift things that are to heavier for you to lift. The MA factor was higher at some times and lower at sometimes. If the MA was higher then some of the others we would have a very good machine there. The MA is higher the anything else. The rivets on the screw make it more high efficient that you would be able to use it for anything.

the wheel and axel help to move an object, and the screw increases the distance but decreases the force and the greater the thread dencity the greater the Ma is just like on the wheel and axel the greater the circumfrance the greater the greater the Ma. and when combined the wheel and axel and the screw can make the force sinificanly decrease.

The screw and the Wheel @ Axle!!!

By doing this experiment online I learned that the wheel and axle makes work easier. When you lift a block vertically you can use a wheel and axle. The two things that I noticed that made a difference in the Mechanical Advantage is the radius of the wheel and the number of threads per meter. When the wheel had a large radius, and the screw had a denser number of threads the mechanical advantage would be higher. If a machine was efficient the Mechanical advantage would be high, if it is efficient, the less work you would have to produce.

The lab tought me that combineing simple machines greatly increases the MA, and that by useing simple machines properly it can decrease the force aplied to move the object. these labs worked well by getting peoples attention by using animated characters and alowing you to manipluate the difrent parts of the simple machines.

Axel, wheel, and screw

What I learned from the online activity. Two things that effected the wheel and axel were the radius of the wheel, and how far apart the threads are. The greatest the wheel and thread number is gives you the most Mechanical Advantage with the wheel and axel. I might have gotten the screw mixed up, for a screw to have the greatest MA, it must have the greatest number of threads. Side note: If you want a greater MA you want a machine with the highes number.